The radiation amount of a mobile phone for two half-hour periods per day is equal to ______ to an X-ray for ten seconds.
| A．expose | B．exposing | C．exposed | D．being exposed |
相关试题
Being a parent is not always easy, and being the parent of a child with special needs often carries with ___ extra stress.
| A．it | B．them | C．one | D．him |
Jane was asked a lot of questions, but she didn’t answer_____ of them.
| A．other | B．any | C．none | D．some |
Could I speak to is in charge of International Sales please?
| A．who | B．what | C．whoever | D．whatever |
Peter’s jacket looked just the same as Jack’s, but it costhis.
| A．as much twice as | B．twice as much as |
C．much as twice as | D．as twice much as |
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